SC521 v1.0 Z80 SIO

Ongoing

STD SC521 v1.0 Z80 SIO

License: Public Domain

Mode:

Editors' pick

Update time： 2022-02-21 19:06:32

Creation time： 2021-12-01 12:53:23

Description

SC521 v1.0 (www.scc.me.uk)

Z80 SIO (serial I/O) card for Z50Bus.

Documentation at www.scc.me.uk

Design Drawing

schematic diagram

（ 1 / ）

PCB

（ 1 / ）

The preview image was not generated, please save it again in the editor.

BOM

ID	Name	Designator	Footprint	Quantity
1	100nF	C1,C2,C3,C4,C5,C6	CAP-RAD-2.54MM	6
2	22pF	C7,C8	CAP-RAD-2.54MM	2
3	Jumper_8X2	JP1	HDR-2X08-S-M-2.54MM	1
4	Serial power	JP2	HDR-2X02-S-M-2.54MM	1
5	RX	JP3	HDR-1X03-S-M-2.54MM	1
6	TX	JP4	HDR-1X03-S-M-2.54MM	1
7	Baud rate A	JP5	HDR-2X08-S-M-2.54MM	1
8	Baud rate B	JP6	HDR-2X08-S-M-2.54MM	1
9	Clock source	JP7	HDR-1X03-S-M-2.54MM	1
10	Z50Bus	P1	Z50BUS-HDR-2X25-A-M-2.54MM	1
11	HDR_1x06_S_M	P2,P3	HDR-1X06-S-M-2.54MM	2
12	2k2	R1,R2,R3,R4,R7,R8,R9,R10	RES-0.3	8
13	100k	R5,R6,R11,R12	RES-0.3	4
14	10k	R13	RES-0.3	1
15	1k	R14	RES-0.3	1
16	1M	R15	RES-0.3	1
17	8x100k	RN1	SIL-9	1
18	Serial Port A	S1	HDR-1X06-S-M-2.54MM	1
19	Serial Port B	S2	HDR-1X06-S-M-2.54MM	1
20	74HCT688	U1	PDIP-20	1
21	Z80 SIO/2	U2	PDIP-40-0.6	1
22	74HCT393	U5	PDIP-14	1
23	7.3728 MHz	X1	OSC-08	1
24	7.3728MHz	X2	HC-49S	1
25	74HCT74	U3	PDIP-14	1
26	74HCT02	U4	PDIP-14	1